Color

#033d3f

#033d3f
hex#033d3f
rgbrgb(3, 61, 63)
hslhsl(182, 91%, 13%)
oklchoklch(0.328 0.054 198.6)
Closest name: Rich Black (#004040)Relative luminance 0.0372

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#3f0503

#033f23 · #031f3f

#3f033d · #3d3f03

Split-complementary

Open in tool →

#3f031f · #3f2303

#23033f · #3f0503 · #1f3f03

Contrast

#033d3f as textRatioAAAA largeAAAFix
Aaon white
12.05:1passpasspassPasses AAA — no fix needed.
Aaon black
1.74:1failfailfail
  • AA: use #068488 as the text (4.66:1)
  • AAA: use #08aaaf as the text (7.38:1)
  • AA: or shift the background to #a1a1a1 (4.66:1)
  • AAA: or shift the background to #c7c7c7 (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #033d3f as the background.

Brands using this color

Fonts for this mood

#033d3f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #033d3f
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #033d3f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/033d3f-a2babe-d45990-1f272d-e9f1ee?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md